XML 64 R38.htm IDEA: XBRL DOCUMENT v3.20.1
Note 2 - Liquidity (Details Textual) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Working Capital (Deficit) $ 93,100 $ 84,300
Long-term Line of Credit, Total 0  
Letters of Credit Outstanding, Amount 35,200 $ 36,300
Line of Credit Facility, Remaining Borrowing Capacity $ 59,800